Electronic cigarette health risks

According to the consensus of authoritative institutions such as the World Health Organization (WHO) and the Centers for Disease Control and Prevention (CDC) of the United States, e-cigarettes are not harmless. Their aerosol contains various toxic and carcinogenic substances, posing clear risks to health.

Regarding the health risks of e-cigarettes, the following are key points based on current scientific evidence:

Damage to the respiratory system
The e-cigarette aerosol is not "water vapor", and it directly damages the respiratory tract.

Lung damage: The most typical example is "e-cigarette or vaping product-related lung injury" (EVALI). In 2019-2020, there was an outbreak of related diseases in the United States, with 2,807 cases and 60 deaths reported.

Inducing or exacerbating lung diseases: Using e-cigarettes is associated with an increased risk of asthma, chronic bronchitis, and chronic obstructive pulmonary disease (COPD). Studies have shown that using e-cigarettes is associated with an increased risk of asthma (OR 1.30). Additionally, some flavorings in the e-liquid may lead to "popcorn lung" (a severe lung disease).

Long-term risks: Long-term exposure can cause lung inflammation, oxidative stress, and impaired airway barrier function. Some preliminary reports also suggest an increased risk of lung cancer.

❤️ Harm to the cardiovascular system
The nicotine and other chemicals in e-cigarettes significantly affect the cardiovascular system.

Affecting hemodynamics: Using e-cigarettes can accelerate heart rate and increase blood pressure.

Increasing disease risk: Long-term use increases the risk of atherosclerosis (causing vascular hardening and narrowing), myocardial infarction (heart attack), and hypertension and other cardiovascular diseases.

Exposure to carcinogens
The e-cigarette aerosol contains known or potentially carcinogenic substances.

Clear carcinogens: including formaldehyde, acetaldehyde, nitrosamines, benzene, etc. As the power and temperature of the device increase, the release of these carcinogens will increase exponentially.

Heavy metals: The aerosol also contains heavy metal particles such as nickel, chromium, and lead. These heavy metals are also toxic and some are carcinogens.

Nicotine addiction and impact on brain development
Nicotine is the most common and highly addictive substance in e-cigarettes.

Affecting the brain of teenagers: The brain of a 25-year-old is still developing, and nicotine exposure can damage learning, memory, and attention abilities and may lead to long-term learning and anxiety disorders.

High addiction: The nicotine salt formula in e-cigarettes makes the inhalation of high-concentration nicotine more smooth, which instead enhances addiction. For example, a JUUL cartridge contains nicotine equivalent to one pack (20 cigarettes).

"Entry effect": Teenagers who use e-cigarettes are more likely to switch to traditional cigarettes in the future, becoming a "gateway" to exposure to nicotine.

Secondhand aerosol and third-hand smoke risks
The secondhand aerosol from e-cigarettes is not harmless and can pollute the environment and affect others.

Harmful substances: include ultrafine particles, nicotine, carcinogens, and heavy metals. Studies have shown that bystanders exposed to secondhand e-cigarette aerosol have a significant decrease in cell activity.

Third-hand smoke risk: harmful substances such as nicotine can remain on clothing, furniture, etc., posing particular risks to children and infants.

⚠️ Other risks
Device safety risks: Poor-quality or improperly used e-cigarettes have the risk of battery explosion and fire, which can cause serious burns and other injuries.

Accidental poisoning: Children who accidentally swallow e-cigarette liquid may suffer acute nicotine poisoning.

Oral health: Using e-cigarettes may be associated with impaired periodontal health.

 Higher risks for specific groups
The following groups should be particularly vigilant about using e-cigarettes:

Teenagers and young adults

Pregnant women

People who have never smoked

Conclusion
In conclusion, e-cigarettes contain and release a variety of harmful substances, causing definite harm to the respiratory and cardiovascular systems. Their nicotine content is highly addictive and detrimental to brain development. Moreover, second-hand aerosol also poses a threat to the health of others.
The US CDC has clearly stated: There is no safe tobacco product, including e-cigarettes. For those who have never smoked (especially teenagers) and pregnant women, it is absolutely not recommended to use them. For adult smokers who want to completely switch to e-cigarettes as an alternative, it may have a potential for reducing harm, but the US FDA has not approved any e-cigarettes as an aid for quitting smoking. The safest option is to avoid both.